/*  mbed Microcontroller Library
    Copyright (c) 2006-2013 ARM Limited

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/
#include "FilePath.h"

namespace mbed {

    FilePath::FilePath(const char* file_path) : file_name(NULL), fb(NULL) {
        if ((file_path[0] != '/') || (file_path[1] == 0)) {
            return;
        }

        const char* file_system = &file_path[1];
        file_name = file_system;
        int len = 0;
        while (true) {
            char c = *file_name;
            if (c == '/') { // end of object name
                file_name++; // point to one char after the '/'
                break;
            }
            if (c == 0) { // end of object name, with no filename
                break;
            }
            len++;
            file_name++;
        }

        fb = FileBase::lookup(file_system, len);
    }

    const char* FilePath::fileName(void) {
        return file_name;
    }

    bool FilePath::isFileSystem(void) {
        if (NULL == fb) {
            return false;
        }
        return (fb->getPathType() == FileSystemPathType);
    }

    FileSystemLike* FilePath::fileSystem(void) {
        if (isFileSystem()) {
            return (FileSystemLike*)fb;
        }
        return NULL;
    }

    bool FilePath::isFile(void) {
        if (NULL == fb) {
            return false;
        }
        return (fb->getPathType() == FilePathType);
    }

    FileLike* FilePath::file(void) {
        if (isFile()) {
            return (FileLike*)fb;
        }
        return NULL;
    }

    bool FilePath::exists(void) {
        return fb != NULL;
    }

} // namespace mbed
